// Javascript Document

function emptyField(txtValue) {
	if (txtValue.length == 0) return true;
  	for (var i=0; i < txtValue.length; ++i) {
		var ch = txtValue.charAt(i);
		if (ch != ' ' && ch != '\t') return false;
  	}
  	return true;
}

function validate(theForm){
	if (emptyField(theForm.name.value)){
		alert('Please enter your name.');
		theForm.name.focus();
    }
    else {
    	if (emptyField(theForm.email.value)){
		    alert('Please enter your email.');
	        theForm.email.focus();
	  	}
	  	else {
			if (emptyField(theForm.phone.value)){
				alert('Please enter a contact phone number.');
				theForm.phone.focus();
			}
			else {
				if (emptyField(theForm.company.value)){
					alert('Please enter your company name.');
					theForm.town.focus();
				}
				else {
					if (emptyField(theForm.enquiry.value)){
						alert('Please enter your enquiry.');
						theForm.enquiry.focus();
					}
					else {
						theForm.submit();
					}
				}
			}
	    }
	}
}